Introduce the basic functions and characteristics of the MVC4 soft starter, including hardware configuration, external connections, and usage methods.
The Motortronics MVC4 is a reduced voltage solid-state soft starter designed for the starting, protection, and control of AC medium voltage motors. It features SCR-based control with fiber optic connections and low voltage control circuitry, suitable for Class E2 medium voltage applications up to 7.2kV.
The manual provides detailed instructions on system configuration, including acceleration and deceleration adjustments, relay assignments, and user interface navigation. It also covers metering functions, event history recording, and maintenance procedures such as SCR testing and failure analysis.
| AC Supply Voltage | 1000 – 7200VAC +10 to – 15% |
|---|---|
| Unit Running Overload Capacity | 125% - Continuous |
| Power Circuit SCRs | 6, 12, or 18 SCRs |
| SCR Peak Inverse Voltage Ratings | 4500V - 19500V |
| Frequency | 50 or 60Hz |
| Ambient Temperature | 0° to 40°C |
| Communication Protocol | Modbus RTU |
| Signal Type | RS-485, RS-422 or RS232 |
The unit has a continuous running overload capacity of 125% of motor FLA.
Yes, it supports remote mounting up to 1000 circuit-feet from the chassis using twisted, shielded wire.
The device supports Modbus RTU via RS-485, RS-422, or RS232 signals.